Both are Oscar winners, Winslet for "The Reader" and Mendes for "American Beauty." They worked together on 2008’s "Revolutionary Road."

“Kate and Sam are saddened to announce that they separated earlier this year,” their lawyers’ statement reads. “The split is entirely amicable and is by mutual agreement. Both parties are fully committed to the future joint parenting of their children.”

The couple, who wed in 2003, have a 6-year-old son, Joe Alfie Winslet Mendes. Winslet also has a 9-year-old daughter, Mia Honey, with her first husband, Jim Threapleton.